Automobile lock



Patented Jan. `1`9,`l1i)26. v

. the parts just. at themoment tlieunlocking a protected. alarm which willfbe sounded: A

' L30 which fisthe' samedliameter. as. thelrod /33l.., 'A nut. 3.4A .is placed on the. fendlfof" the rod.. 33. .The pipe 2^1.,i'sprovided. with 3459,lfroml which? afpifpefz. 35 leads into. the cyli`nder2'8- through tlie'standard'26.

lntufrcnmalalr'firLeerz'.' y

'Agp1icati0m-a1ee owberaa, 1'24... -serial Nb. vasi-atea..y

Automobile Lock, ofV which. the ifollowingvis a specification. f

Thisi'nvention. relates generally.jto.thev automotive industry and particularly todevices for automatically locking an auto-` mobile'against;unauthorized,us.e.. y

The first object of .my inventiomis the..v

production ofv an eXceedingly'fsimple and efficient automobile lock. which automatif-' -cally locks an.. automobile after the..lapseigor( tune the engine is stopped..

A. second obfect is to enable him; to locke his car with.. a .keyl it'lie desires .auditor unlock f it' at any time 4with the sameley;

a .predetermined space of timejfromV the A third' object'. is to, soconstruct my dev-ice` that the instant; the .car'isloclred it. will set whenever the car.isrmoved` .I

These and other objects. .wlll becomermore apparent from the specificati'onsfVV following and from` Vthe accompanying.. "drauvingnnf which.:

Figure l, isa horizcntal.v section y,oai'my.

device: taken: along: the lline 1 -1 Figure 3 showing the. parts in. an unloclredposltion, Figurev 2, isa .plan .of the device with the cover removed, showing thefparts. inv the..

' v38 w-lioserspring39, on its;.'sh`ank.'40is. conniinedi bly the-cap 4.1.* head. V42. is. formed: f onsitlielwend( o'ftl-1e-gsha'nlif40f. to'V preventits .completeejectio1rlocked position.

Figure 3, is a transverse section..taken.`

. Figure-r 4 is a fragmentary plan show-ing'` operation has .beg i Figure 5 isa fragmentary transverse sec,

tion AtakeILalOng the line4 Figure 1.

The drawing is largely diagrammatic. AA

b oxlike container, orinstance, is used to represent a Vtransmission .case and a pair of unmeshed gears are indicated as thegears of a transmission in a neutral position.

Similar numbers of reference Yrefer to the same parts Y throughout the views.

Referring in detail to the drawings, I 'nave illustrateda rectangular boX,.consist ing of afront 10, a back l1 and ends 12 and 13. A top or cover 14 isV also indicated. The foregoing parts correspond with the transmission case of an automobile whose usual working parts'are' omitted with the j exceptionof a 15 corresponding.'with.v

the: speedometer drive. shaft, and; the propel?.

martiale Waarna S1'iaing'-, gear 17- and' the, r.; secondary shat lwith. its gear y.19.;

Tlieusu-a-l geared oil pump20` vis shown.,

and". also tliepipe 21,- which leads to the ila- V rions points to be lubricated.

Referring;moreparticularly to vmy device, i

If )have `constructed .af,..base. 22,. v.which 'is'.. mounted on the inner side-ofthe; front', 10,

kOngthe..-ba'se 2 2, are formed. the. standards 23, 24'. and. '25 and to V'oneend is'securedg thev standard 2L6` ;bfy l means .of thevv screws 27.. y

` The. ystandards.25.:and 26, support aicylin.-

standard26if.

`A piston 29: having a tubular y Y l-30,;is. contained withinthecylinder,'281g'- compression.. spring 31, is confined in the A. holeA .3.6A passes` through ,the standardf2-6` andY the-.screw controls:V the speed at. Whiclr oil can bie,Y forced, out, 'of the cylinder 28, .by meansof .the spring 31...

Inithe. standard 23 iS-.LpIaCedthe plunger 43,1..k .which ..ca`rry.jtlie vertical .rocker shaft A(44.. Secured. Ion theI isha-.ft 4.4 .isa an.' armV 4.5,.

whosefendli..isaniarcfstruck. from: the cenl ter ofA the shaft 44. `A' pin 47, is provided near the end 46 Vfor. the spring v48 Whose end is attached to the standard 25.,V The end 49 ofthe arm 45l is pro-vided witha y rivet 50, whichworks freely in the slot 51 in the double arm 52 which pivots on the standard 23 land Whose forked end 53 engages the groove'54 in the slidable toothed wheel 55, which is drivenl through. a spline 56 on the shaftl.

The teeth on thewheel 55 can be brought into engagement with the hardened button 57 on the diaphragm 58 by merely sliding',l

thel wheel .55 along the shaftl 15.

On the under end of the shaft 44 is secured an arm 59, by means of which the shaft 44 is rocked.

Between the sides 10 and .11, Ihave placed a bridge 60, which is held in place by means of the screws 6l in the flanges 62. On the underside of the bridge 60 vare formed the dovetailed guides 63 between which is slidably held the slide 64 which carries the two pins 65 adapted tostraddle the gear 17 whenin its neutral'position. The slide 64 also carries the two spaced pins 66 and 67 and a laterally extending arm, 68 whose turned` end 69 `can touch the side 'of the arm 59. y

A lock TO is mounted on the bridge GO and its key 7l rotates the shaft 72 from which projects the arm 73 which operates between the pinsl 66 and 67.

The operation of my device'is as follows:

When the ydriver of an automobile equipped Withthis device desires to start his car, he inserts his key 7l in the lock and unlocks the transmission as he would with any transmission or neutral lock, and starts his engine.

The oil pump 20 now lraises the pressure in the cylinder 28, which compresses the spring 31 and forces the tube 30 out of the cylinder against the shoulder on the rod 33 which is in turn forced through the standard 24 against the plunger 38 which is holding the end 46 of the arm 45 out of the path of the member 33. The end 46 now rests on the member 33 instead of on the member 38.

It will be observed thatthese positions ,v are shown in Figures 1 and 4, namely the unlocked position. Y

Now let us suppose that the driver stops his engine and leaves his car, forgetting tov lock the transmission with his key. 1When the engine stops the pump 20 also stops and pressure lin the pipe 2l drops to Zero.` The oil is now forced out of the cylinder 28 by v64 to lock the transmission.

34A.it begins tov withdraw the rod 33 from under the arm end 46 until it takes the locked position shown in Figure 2. In moving tothe yposition shown in Fig. 2, the arm 59 forces the arm 68 with its attached slide n The rapidity with which the locking operation takes place is controlled by the setting of the screw 87. The alarm is also set so that any movement of the speedometer shaftwill sound the horn. A

. Before the car can be again driven under its own power, it must be unlocked with the key 'Tl which causes the slide 64 to be withdrawn and the parts to assume the position shown in Figure l.

I am aware that many forms of automobile locks have been constructed inV the past; I therefore do not claim such devices broadly but I do intend to cover such forms following claims l. A lock actuating mechanism for transmission locks, Vconsisting of a frame; a cylinder mounted on said frame; Ya piston in said cylinder', motor actuated means for delivering oil to said cylinder; aspring behind said piston adapted to expel the oil from said cylinder when the oil delivery ceases; a rod on said piston ;7a spring urged plunger in thejpath of said rod; a rocker shaft; an arm on said shaft whose end can swing in the path of said plunger and piston rod; a transmission lock; a bolt operable by said lock and connection means between said bolt and arm adapted to rest said arm on said plunger when said bolt is withdrawn and to limit the movement of said piston rod when said bolt is set to lock a transmission.

2. An automobile lock having in combination a transmission lock, and a lock actuating device adapted to lock said lock when the engine is stopped, saidactuating device consisting of a cylinder; a piston in said cylinder; pipes for supplying oil to said cylinder from the oil pump of the motor, said piston having' Vconnections to said lock adapted to lock the transmission gears when said oil pump ceases to function.

ARTHUR M. wis'wiiLL. 

